How much ozone is required?

Different circumstances in an aquarium result in different water conditions. Therefore, e.g. the stocking rate, quality and quantity of feed, the filter system and several other criteria have an impact on the water conditions.

As a rule of thumb the capacity of the ozonizer should be calculated by 10 mg ozone per 100 l of water. This empirical value is the result of several years of experience. In modern aquaristics there are a lot of specialized aquarists who need to have defined water conditions for their animals. In this case we recommend the use of a Sander redox potential measuring and regulating unit.

The redox potential measuring and regulating unit controls Sander ozonizer types C, S and XT and so a constant ozone dosage is provided.

The redox potential of the water is measured by means of an electrode and is shown on a digital display. On the redox controller the required set-point can be set. If the measured redox value exceeds the set-point the ozonizer is switched off. If the measured redox value falls below the set point the ozonizer is switched on.

So you ensure a constant purification of your aquarium water with no overdosage of ozone.

Generally aquaria are operated with redox values between 200 mV and 350 mV. For more information about redox values click here.

For the initial startup of an ozonizer we recommend to increase the ozone capacity slowly during several days.